Open Optical White Line Systems Similar Hype as SDN?

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Eugene Leonard
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1 Similar Hype as SDN? Kurosh Bozorgebrahimi, UNINETT, Jan Radil, CESNET 9th CEF Workshop, Praha 11-12/9 2017

2 Slides based on the NGON presentation from the same authors. Outline: What are OOWLSs? Any comparison with other open (data) systems? Are there any practical scenarios with OOWLSs? Are OOWLSs the real thing or just another hot term as SDN? Can we conclude anything useful? 12/9/2017 9th CEF Workshop, Praha 2

3 Usual naming is Open Line Systems (OLS), extended it to OOWLS to emphasise white box aspects. White box: Separating network equipment in functionally independent component which could be independently optimized and independently deployed. Usual for L2 ethernet, not so common for optical equipment. Open Line System: Separation of the line system (Mux/Demux, ROADMs, amplifiers, ) from the transponders (3R functionality). Others may think different. Interesting thoughts from Rodney Dellinger, ALU, Agile Open Line System, ECOC /9/2017 9th CEF Workshop, Praha 3

4 Different levels of aggregation: Aggregated (all from one vendor: transponders, amps, SW,...). Partly Disaggregated OLS/OOWLS (transponders and amps). Totally disaggregated system Whiteboxes (all boxes independent). There is long way to go from totally closed and vendor specific systems to totally disaggregated systems. There will be different degrees of openness and important question is what kind of openess we want or need... Perhaps not needed at all? If we are happy? Interesting slides from N. 2017: White Box Optics: Will It Kill or Encourage Innovation? 12/9/2017 9th CEF Workshop, Praha 4

5 Disaggregation in data plane from Demarcation points Aggregated Partly Disaggregated OLS/OOWLS Whiteboxes and totally disaggregated system. 12/9/2017 9th CEF Workshop, Praha 5

6 Closed system with rigid vendor proprietary HW, SW and management Do we need this? Do we want this? Saving money? Something else? Just curiosity? Totally disaggregated: Each functional blocks could be independently chosen. The HW functional blocks could use any open OS and could be operated by any open management and control plane Vendor specific HW/SW Fully Open model 12/9/2017 9th CEF Workshop, Praha 6

7 This SDN term is here for few years now. Also many other terms and (perhaps strange) abbreviations like NFV, OF-Config, OVSDB, YANG and others. It looks SDN is not so popular or catchy anymore? Intended mainly for switching, routing, storage, clouds,...or not? Interesting also for optical devices/layer (L0). Not easy because lack of standards this is true not only for L0 but also for routing and switching equipment. We have new trends with white boxes (open networking) on optical layer. 12/9/2017 9th CEF Workshop, Praha 7

8 Example of SDN? Border Gateway Protocol BGP (used from 1994). Is it software? Yes. Do we define something (packets accepted/rejected,...). Yes. Is it networking? Of course. 12/9/2017 9th CEF Workshop, Praha 8

9 How many real SDN applications do exist? One subtle example: CESNET optical SDN demo on TNC2017. May be called a Train demo. Using Czech Light TM ROADM. SDN application for Optical Path Protection. Done with YANG and NETCONF. All intelligence embedded in this application. Also GÉANT Testbed Service (GTS), will be available in CESNET and other NRENs in near future. In CESNET: TS for SDN and other experiments. 12/9/2017 9th CEF Workshop, Praha 9

10 It looks SDN has been here for many years but in disguise? Is SDH here right now? Or gone? SDN controllers more robust but not all funcionalities implemented... BUT NEW SW (driver) MUST BE WRITTEN FOR A SDN CONTROLLER. SW for a controller is basic, new features in applications (just another SW). But SDN can offer resources optimization and cost effective solutions. Or we are told so. New real-world applications are needed. 12/9/2017 9th CEF Workshop, Praha 10

11 Back to optics: Do we have some nice OLS/OOWLS examples? Yes. SUNET: AWs used in production (almost) everywhere. Source: P. Nihlen, SUNET, TNC2016. UNINETT: Cisco and Juniper AWs over Coriant. Source: K. Bozorgebrahimi, TNC2016. Also CESNET Cisco AWs over Czech Light TM equipment AND time/frequency transfer. And other examples in Europe, US, Australia... 12/9/2017 9th CEF Workshop, Praha 11

Some useful documents available: ITU-T G.698.2: Provides optical parameter values for physical layer interfaces of DWDM systems, 2009. Not very fresh.

12 Some useful documents available: ITU-T G.698.2: Provides optical parameter values for physical layer interfaces of DWDM systems, Not very fresh. IETF: Draft-kunze-black-link-management-framework-00, Broadband Forum: TR-319 Part A, Achieving Packet Network Optimization using DWDM Interfaces - Physically Integrated Model, TR-319 Part-B, Achieving Packet Network Optimization using DWDM Interfaces - Physically Separated Model, /9/2017 9th CEF Workshop, Praha 12

13 Industry initiatives. We are not alone of course. Optical Internetworking Forum OIF. Telecom Infra Project TIP. Voyager testing in GÉANT. Open ROADM. Open Networking Fundation ONF. And others I am not aware of, my apologies. 12/9/2017 9th CEF Workshop, Praha 13

14 Conclusion: There is a long way to go achieving full openness in optical domain. OLS/OOWLS could be considered as a first step toward this vision. Different degrees of openness to be developed and the question is where you as operator would like to be. OLS/OOWLS should support flexible grid and other interesting features, Alien Waves (must be) supported/possible. Ability to support capacity beyond 100G for long haul as we heard from our colleagues from different NRENs. NREN community are likely one of the first communities able to deploy OLS/OOWLS solutions. Not only IP and Ethernet. 12/9/2017 9th CEF Workshop, Praha 14

15 Acknowledgment: Too many to name:-) Colleagues from NREN community and also from industry colleagues/partners. Thank you for your attention. 12/9/2017 9th CEF Workshop, Praha 15

Trends in Optical Disaggregation. Presented by :

Trends in Optical Disaggregation Presented by : Today s Presenters Moderator Simon Stanley Analyst at Large Heavy Reading Matthew Mitchell Vice President of Optical Systems Architecture, Infinera Corporation